SUEMATSU-Yasuharu Award
Application of Game Theory to Wireless LAN and Mobile Communication Technologies
Koji YAMAMOTO

Koji YAMAMOTO
     
  Koji Yamamoto received his Ph.D. degree in informatics from Kyoto University in 2005. Since 2005, he has been with the Graduate School of Informatics, Kyoto University, where he is currently an associate professor.
  He pointed out that game theory can be applied to formulations and analysis of interference management problems in radio communication networks because co-channel interference can be viewed as interactions among transceivers, and interactions among multiple decision-makers can be formulated and analyzed using a branch of applied mathematics called game theory. Game theory was initially developed in economics and treats the optimization problem as a kind of game.
  He pursued his research on game-theoretic analysis over a period of ten years. He applied game-theoretic approaches to wireless local area networks, mobile networks, ad hoc networks, cognitive radio networks, full-duplex communications, and the smart grid. He validated the convergence of game-theoretic resource allocation schemes through testbed experiments in addition to conducting theoretical analyses.
  He presented a survey paper on potential game approaches to wireless networks. Potential games form a class of non-cooperative games where some kinds of update dynamics are guaranteed to converge in many practical cases while update dynamics do not necessarily converge in general games. The potential game approach has been applied to a wide range of wireless network problems but the relations among them were not clear. Through the paper, he provided a systematic view of a huge number of problems in wireless networks that can be formulated as potential games. This systematic view will provide insights useful in designing new applications of potential games.
  As described above, for his outstanding contributions in the field of electronics, information, and communications, he deserves the SUEMATSU-Yasuharu Award.

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